Bottle cap



FIG. 1 is a perspective view of a bottle cap showing my new design;

FIG. 2 is a front view of the bottle cap illustrated in FIG. 1, the rear view being identical thereto;

FIG. 3 is a side view of the bottle cap shown in FIG. 1, the opposite side being identical thereto;

FIG. 4 is a plan view of the bottle cap set forth in FIG. 1; and,

FIG. 5 is a reverse plan view of the bottle cap shown in FIG. 1. 

The ornamental design for a bottle cap, substantially as shown and described. 